Table 7.
Epistatic interactions (additive × additive) for QTL pairs detected in cross (ICMB 841-P3 × 863B-P2) in test environment 1 (late Kharif 2009).
| Trait | QTL 1$ | QTL 2$ | R2 (%) | Epistatic effect@ |
|---|---|---|---|---|
| FT | 2/132 | 7/192 | 12.0 | – |
| FT | 2/192 | 7/192 | 11.4 | + |
| FT | 4/58 | 6B/18 | 10.1 | + |
| PH | 1/60 | 1/190 | 8.1 | + |
| PH | 1/190 | 6B/10 | 9.1 | – |
| PH | 3/202 | 7/254 | 4.6 | – |
| PH | 7/74 | 7/254 | 5.5 | – |
| PL | 1/58 | 2/44 | 5.9 | – |
| PL | 7/68 | 7/154 | 5.9 | – |
| TGW_OP | 6B/16 | 7/46 | 14.8 | – |
$
Leading number: Linkage group; Trailing number: QTL position in cM.
@
Epistatic effect: a “+” sign indicates that the parental two-locus genotypes have a positive effect on the phenotype, while the recombinants have a negative effect on the phenotype, and a “–” sign means that the parental two-locus genotypes have a negative effect on the phenotype, and that the recombinants have a positive effect on the phenotype.
FT, Time to 50% flowering (d); PH, Plant height (cm); PL, Panicle length (cm); TGW_OP, Open-pollinated 1,000-grain weight (g).